I am using ocaml 4.10.0. in utop, i can see the signature when i execute “Map.find;;” but got “Unbound value Map.find_first” when i execute “Map.find_first;;”
from the doc, i know Map.find_first is added since 4.05. so what’s going on?
There is a probability that you open a few modules in ~/.ocamlinit which hide default ones